+/* Copyright (C) 1997 Andre Noll <maan@tuebingen.mpg.de>, see file COPYING. */
+
+/** \file attribute.c Attribute handling functions. */
+
+#include <regex.h>
+#include <osl.h>
+#include <lopsub.h>
+
+#include "server_cmd.lsg.h"
#include "para.h"
#include "error.h"
+#include "crypt.h"
+#include "string.h"
#include "afh.h"
#include "afs.h"
-#include "string.h"
-#include "net.h"
+#include "ipc.h"
+#include "sideband.h"
+#include "command.h"
-static void *attribute_table;
+static struct osl_table *attribute_table;
static int greatest_att_bitnum;
+/** The columns of the attribute table. */
+enum attribute_table_columns {
+ /** The bit number (0-63). */
+ ATTCOL_BITNUM,
+ /** The name of the attribute. */
+ ATTCOL_NAME,
+ /** Number of columns in this table. */
+ NUM_ATT_COLUMNS
+};
+
static int char_compare(const struct osl_object *obj1, const struct osl_object *obj2)
{
const unsigned char *c1 = (const unsigned char*)obj1->data;
return 0;
}
-enum attribute_table_columns {ATTCOL_BITNUM, ATTCOL_NAME, NUM_ATT_COLUMNS};
-
static struct osl_column_description att_cols[] = {
[ATTCOL_BITNUM] = {
.storage_type = OSL_MAPPED_STORAGE,
return;
}
} while (c--);
- PARA_INFO_LOG("%s\n", "no attributes");
+ PARA_INFO_LOG("no attributes\n");
greatest_att_bitnum = -E_NO_ATTRIBUTES;
}
+/**
+ * Retrieve the identifier (number) of an attribute.
+ *
+ * \param att_name The name of the attribute.
+ * \param bitnum Result pointer.
+ *
+ * \return Positive on success, negative on errors.
+ */
int get_attribute_bitnum_by_name(const char *att_name, unsigned char *bitnum)
{
struct osl_object obj = {.data = (char *)att_name,
.size = strlen(att_name) + 1};
struct osl_row *row;
- int ret = osl_get_row(attribute_table, ATTCOL_NAME, &obj, &row);
+ int ret = osl(osl_get_row(attribute_table, ATTCOL_NAME, &obj, &row));
if (ret < 0)
return ret;
- ret = osl_get_object(attribute_table, row, ATTCOL_BITNUM, &obj);
+ ret = osl(osl_get_object(attribute_table, row, ATTCOL_BITNUM, &obj));
if (ret < 0)
return ret;
*bitnum = *(unsigned char *)obj.data;
return 1;
}
-#define LAA_FLAG_ALPHA 1
-#define LAA_FLAG_LONG 2
-
-struct private_laa_data {
- int fd;
- unsigned flags;
-};
-
-static int log_attribute(struct osl_row *row, void *private_data)
+/* Data passed to the action function of lsatt */
+static int print_attribute(struct osl_table *table, struct osl_row *row,
+ const char *name, void *data)
{
- struct private_laa_data *pld = private_data;
+ struct afs_callback_arg *aca = data;
+ bool l_given = SERVER_CMD_OPT_GIVEN(LSATT, LONG, aca->lpr);
+ struct osl_object bitnum_obj;
int ret;
- struct osl_object name_obj, bitnum_obj;
- ret = osl_get_object(attribute_table, row, ATTCOL_NAME, &name_obj);
- if (ret < 0)
- return ret;
- if (!(pld->flags & LAA_FLAG_LONG)) {
- send_buffer(pld->fd, (char *)name_obj.data);
+ if (!l_given) {
+ para_printf(&aca->pbout, "%s\n", name);
return 1;
}
- ret = osl_get_object(attribute_table, row, ATTCOL_BITNUM, &bitnum_obj);
- if (ret < 0)
+ ret = osl(osl_get_object(table, row, ATTCOL_BITNUM, &bitnum_obj));
+ if (ret < 0) {
+ para_printf(&aca->pbout, "%s: %s\n", name, para_strerror(-ret));
return ret;
- send_va_buffer(pld->fd, "%u\t%s\n", *(unsigned char*)bitnum_obj.data,
- (char *)name_obj.data);
- return 1;
-}
-
-/* FIXME: Need callback */
-int com_lsatt(int fd, int argc, char * const * const argv)
-{
- struct private_laa_data pld = {.fd = fd, .flags = 0};
- int i;
-
- for (i = 1; i < argc; i++) {
- const char *arg = argv[i];
- if (arg[0] != '-')
- break;
- if (!strcmp(arg, "--")) {
- i++;
- break;
- }
- if (!strcmp(arg, "-a")) {
- pld.flags |= LAA_FLAG_ALPHA;
- continue;
- }
- if (!strcmp(arg, "-l")) {
- pld.flags |= LAA_FLAG_LONG;
- continue;
- }
}
- if (argc > i)
- return -E_ATTR_SYNTAX;
- if (pld.flags & LAA_FLAG_ALPHA)
- return osl_rbtree_loop(attribute_table, ATTCOL_NAME,
- &pld, log_attribute);
- return osl_rbtree_loop(attribute_table, ATTCOL_BITNUM,
- &pld, log_attribute);
+ para_printf(&aca->pbout, "%u\t%s\n", *(unsigned char*)bitnum_obj.data,
+ name);
+ return 1;
}
-static int com_setatt_callback(const struct osl_object *query,
- __a_unused struct osl_object *result)
+static int com_lsatt_callback(struct afs_callback_arg *aca)
{
- char *p;
- uint64_t add_mask = 0, del_mask = 0;
+ const struct lls_command *cmd = SERVER_CMD_CMD_PTR(LSATT);
+ bool i_given, r_given;
int ret;
- size_t len;
- struct osl_object obj;
- struct osl_row *row;
-
- for (p = query->data; p < (char *)query->data + query->size; p += len + 1) {
- char c;
-
- len = strlen(p);
- if (!*p)
- return -E_ATTR_SYNTAX;
- c = p[len - 1];
- if (c != '+' && c != '-')
- break;
- p[len - 1] = '\0';
- obj.data = p;
- obj.size = len + 1;
- ret = osl_get_row(attribute_table, ATTCOL_NAME, &obj, &row);
- if (ret < 0)
- return ret;
- ret = osl_get_object(attribute_table, row, ATTCOL_BITNUM,
- &obj);
- if (ret < 0)
- return ret;
- if (c == '+')
- add_mask |= (1UL << *(unsigned char *)obj.data);
- else
- del_mask |= (1UL << *(unsigned char *)obj.data);
- }
- if (!add_mask && !del_mask)
- return -E_ATTR_SYNTAX;
- PARA_DEBUG_LOG("masks: %llx:%llx\n",(long long unsigned)add_mask,
- (long long unsigned)del_mask);
- for (; p < (char *)query->data + query->size; p += len + 1) { /* TODO: fnmatch */
- struct afs_info old_afsi, new_afsi;
- struct osl_row *aft_row;
-
- len = strlen(p);
- ret = aft_get_row_of_path(p, &aft_row);
- if (ret < 0)
- return ret;
- ret = get_afsi_object_of_row(p, &obj);
- if (ret < 0)
- return ret;
- ret = load_afsi(&old_afsi, &obj);
- if (ret < 0)
- return ret;
- new_afsi = old_afsi;
- new_afsi.attributes |= add_mask;
- new_afsi.attributes &= ~del_mask;
- save_afsi(&new_afsi, &obj); /* in-place update */
- ret = mood_update_audio_file(aft_row, &old_afsi);
- if (ret < 0)
- return ret;
- }
- return 1;
+ struct pattern_match_data pmd = {
+ .table = attribute_table,
+ .loop_col_num = ATTCOL_NAME,
+ .match_col_num = ATTCOL_NAME,
+ .pm_flags = PM_NO_PATTERN_MATCHES_EVERYTHING,
+ .data = aca,
+ .action = print_attribute
+ };
+
+ ret = lls(lls_deserialize_parse_result(aca->query.data, cmd, &aca->lpr));
+ assert(ret >= 0);
+ pmd.lpr = aca->lpr;
+ i_given = SERVER_CMD_OPT_GIVEN(LSATT, ID_SORT, aca->lpr);
+ r_given = SERVER_CMD_OPT_GIVEN(LSATT, REVERSE, aca->lpr);
+
+ if (i_given)
+ pmd.loop_col_num = ATTCOL_BITNUM;
+ if (r_given)
+ pmd.pm_flags |= PM_REVERSE_LOOP;
+ ret = for_each_matching_row(&pmd);
+ if (ret < 0)
+ goto out;
+ if (pmd.num_matches == 0)
+ ret = -E_NO_MATCH;
+out:
+ lls_free_parse_result(aca->lpr, cmd);
+ return ret;
}
-int com_setatt(__a_unused int fd, int argc, char * const * const argv)
+static int com_lsatt(struct command_context *cc, struct lls_parse_result *lpr)
{
- if (argc < 2)
- return -E_ATTR_SYNTAX;
- return send_standard_callback_request(argc, argv, com_setatt_callback,
- NULL);
+ const struct lls_command *cmd = SERVER_CMD_CMD_PTR(LSATT);
+ return send_lls_callback_request(com_lsatt_callback, cmd, lpr, cc);
}
+EXPORT_SERVER_CMD_HANDLER(lsatt);
-/* TODO: make it faster by only extracting the attribute member from afsi */
-static int logical_and_attribute(struct osl_row *aft_row, void *attribute_ptr)
-{
- struct afs_info afsi;
- uint64_t *att = attribute_ptr;
- struct osl_object obj;
- int ret = get_afsi_object_of_row(aft_row, &obj);
- if (ret < 0)
- return ret;
- ret = load_afsi(&afsi, &obj);
- if (ret < 0)
- return ret;
- afsi.attributes &= *att;
- save_afsi(&afsi, &obj);
- return 1;
-}
+struct addatt_event_data {
+ const char *name;
+ unsigned char bitnum;
+};
-static int com_addatt_callback(const struct osl_object *query,
- __a_unused struct osl_object *result)
+static int com_addatt_callback(struct afs_callback_arg *aca)
{
- char *p = query->data;
- uint64_t atts_added = 0;
- int ret;
+ const struct lls_command *cmd = SERVER_CMD_CMD_PTR(ADDATT);
+ int i, ret = 1;
+ size_t len;
+ unsigned num_inputs;
- while (p < (char *)query->data + query->size) {
+ ret = lls(lls_deserialize_parse_result(aca->query.data, cmd, &aca->lpr));
+ assert(ret >= 0);
+ num_inputs = lls_num_inputs(aca->lpr);
+ for (i = 0; i < num_inputs; i++) {
+ const char *name = lls_input(i, aca->lpr);
struct osl_object objs[NUM_ATT_COLUMNS];
struct osl_row *row;
unsigned char bitnum;
+ struct addatt_event_data aed;
+ len = strlen(name);
+ if (len == 0 || name[len - 1] == '-' || name[len - 1] == '+') {
+ para_printf(&aca->pbout,
+ "invalid attribute name: %s\n", name);
+ continue;
+ }
+ ret = get_attribute_bitnum_by_name(name, &bitnum);
+ if (ret >= 0) {
+ para_printf(&aca->pbout,
+ "attribute \"%s\" already exists\n", name);
+ continue;
+ }
+ if (ret != -OSL_ERRNO_TO_PARA_ERROR(E_OSL_RB_KEY_NOT_FOUND)) /* error */
+ goto out;
objs[ATTCOL_BITNUM].size = 1;
- objs[ATTCOL_NAME].data = p;
- objs[ATTCOL_NAME].size = strlen(p) + 1;
- ret = osl_get_row(attribute_table, ATTCOL_NAME,
- &objs[ATTCOL_NAME], &row); /* expected to fail */
- if (ret >= 0)
- return -E_ATTR_EXISTS;
- if (ret != -E_RB_KEY_NOT_FOUND) /* error */
- return ret;
- /* find smallest non-used attribute */
+ /* find smallest unused attribute */
for (bitnum = 0; bitnum < 64; bitnum++) {
objs[ATTCOL_BITNUM].data = &bitnum;
- ret = osl_get_row(attribute_table, ATTCOL_BITNUM,
- &objs[ATTCOL_BITNUM], &row);
- if (ret == -E_RB_KEY_NOT_FOUND)
+ ret = osl(osl_get_row(attribute_table, ATTCOL_BITNUM,
+ &objs[ATTCOL_BITNUM], &row));
+ if (ret == -OSL_ERRNO_TO_PARA_ERROR(E_OSL_RB_KEY_NOT_FOUND))
break; /* this bitnum is unused, use it */
if (ret < 0) /* error */
- return ret;
+ goto out;
/* this bit is already in use, try next bit */
}
- if (bitnum == 64)
- return -E_ATTR_TABLE_FULL;
- ret = osl_add_row(attribute_table, objs);
+ if (bitnum == 64) {
+ ret = -E_ATT_TABLE_FULL;
+ goto out;
+ }
+ objs[ATTCOL_NAME].data = (char *)name;
+ objs[ATTCOL_NAME].size = len + 1;
+ ret = osl(osl_add_row(attribute_table, objs));
+ if (ret < 0)
+ goto out;
+ aed.name = name;
+ aed.bitnum = bitnum;
+ ret = afs_event(ATTRIBUTE_ADD, &aca->pbout, &aed);
if (ret < 0)
- return ret;
- greatest_att_bitnum = PARA_MAX(greatest_att_bitnum, bitnum);
- atts_added |= 1 << bitnum;
- p += strlen(p) + 1;
+ goto out;
+ greatest_att_bitnum = PARA_MAX(greatest_att_bitnum, (int)bitnum);
}
- if (!atts_added)
- return 1;
- atts_added = ~atts_added;
- ret = audio_file_loop(&atts_added, logical_and_attribute);
+out:
if (ret < 0)
+ para_printf(&aca->pbout, "error while adding %s\n",
+ lls_input(i, aca->lpr));
+ lls_free_parse_result(aca->lpr, cmd);
+ return ret;
+}
+
+static int com_addatt(struct command_context *cc, struct lls_parse_result *lpr)
+{
+ const struct lls_command *cmd = SERVER_CMD_CMD_PTR(ADDATT);
+ char *errctx;
+ int ret = lls(lls_check_arg_count(lpr, 1, 64, &errctx));
+
+ if (ret < 0) {
+ send_errctx(cc, errctx);
return ret;
- find_greatest_att_bitnum();
- return mood_reload();
+ }
+ return send_lls_callback_request(com_addatt_callback, cmd, lpr, cc);
}
+EXPORT_SERVER_CMD_HANDLER(addatt);
-int com_addatt(__a_unused int fd, int argc, char * const * const argv)
+static int com_mvatt_callback(struct afs_callback_arg *aca)
{
- if (argc < 2)
- return -E_ATTR_SYNTAX;
- return send_standard_callback_request(argc, argv, com_addatt_callback,
- NULL);
+ const struct lls_command *cmd = SERVER_CMD_CMD_PTR(MVATT);
+ const char *old, *new;
+ struct osl_object obj;
+ struct osl_row *row;
+ int ret;
+
+ ret = lls(lls_deserialize_parse_result(aca->query.data, cmd, &aca->lpr));
+ assert(ret >= 0);
+ old = lls_input(0, aca->lpr);
+ new = lls_input(1, aca->lpr);
+ obj.data = (char *)old;
+ obj.size = strlen(old) + 1;
+ ret = osl(osl_get_row(attribute_table, ATTCOL_NAME, &obj, &row));
+ if (ret < 0)
+ goto out;
+ obj.data = (char *)new;
+ obj.size = strlen(new) + 1;
+ /* The update fails if the destination attribute exists. */
+ ret = osl(osl_update_object(attribute_table, row, ATTCOL_NAME, &obj));
+out:
+ if (ret < 0)
+ para_printf(&aca->pbout, "cannot rename %s to %s\n", old, new);
+ else
+ ret = afs_event(ATTRIBUTE_RENAME, &aca->pbout, NULL);
+ lls_free_parse_result(aca->lpr, cmd);
+ return ret;
}
-static int com_rmatt_callback(const struct osl_object *query,
- __a_unused struct osl_object *result)
+static int com_mvatt(struct command_context *cc, struct lls_parse_result *lpr)
{
- char *p = query->data;
- int ret, atts_removed = 0;
- while (p < (char *)query->data + query->size) {
- struct osl_object obj = {
- .data = p,
- .size = strlen(p) + 1
- };
- struct osl_row *row;
- ret = osl_get_row(attribute_table, ATTCOL_NAME,
- &obj, &row);
- if (ret < 0)
- return ret;
- ret = osl_del_row(attribute_table, row);
- if (ret < 0)
- return ret;
- atts_removed++;
- p += strlen(p) + 1;
+ const struct lls_command *cmd = SERVER_CMD_CMD_PTR(MVATT);
+ char *errctx;
+ int ret = lls(lls_check_arg_count(lpr, 2, 2, &errctx));
+ if (ret < 0) {
+ send_errctx(cc, errctx);
+ return ret;
}
- find_greatest_att_bitnum();
- if (!atts_removed)
- return 1;
- return mood_reload();
+ return send_lls_callback_request(com_mvatt_callback, cmd, lpr, cc);
+}
+EXPORT_SERVER_CMD_HANDLER(mvatt);
+
+static int remove_attribute(struct osl_table *table, struct osl_row *row,
+ const char *name, void *data)
+{
+ struct afs_callback_arg *aca = data;
+ int ret;
+ struct rmatt_event_data red = {.name = name};
+
+ ret = get_attribute_bitnum_by_name(name, &red.bitnum);
+ if (ret < 0) {
+ para_printf(&aca->pbout, "cannot remove %s\n", name);
+ return ret;
+ }
+ para_printf(&aca->pbout, "removing attribute %s\n", name);
+ ret = osl(osl_del_row(table, row));
+ if (ret < 0) {
+ para_printf(&aca->pbout, "cannot remove %s\n", name);
+ return ret;
+ }
+ return afs_event(ATTRIBUTE_REMOVE, &aca->pbout, &red);
}
-int com_rmatt(__a_unused int fd, int argc, char * const * const argv)
+static int com_rmatt_callback(struct afs_callback_arg *aca)
{
- if (argc < 2)
- return -E_ATTR_SYNTAX;
- return send_standard_callback_request(argc, argv, com_rmatt_callback,
- NULL);
+ const struct lls_command *cmd = SERVER_CMD_CMD_PTR(RMATT);
+ int ret;
+ struct pattern_match_data pmd = {
+ .table = attribute_table,
+ .loop_col_num = ATTCOL_BITNUM,
+ .match_col_num = ATTCOL_NAME,
+ .data = aca,
+ .action = remove_attribute
+ };
+ ret = lls(lls_deserialize_parse_result(aca->query.data, cmd, &aca->lpr));
+ assert(ret >= 0);
+ pmd.lpr = aca->lpr;
+ ret = for_each_matching_row(&pmd);
+ if (ret < 0)
+ goto out;
+ if (pmd.num_matches == 0)
+ ret = -E_NO_MATCH;
+out:
+ lls_free_parse_result(aca->lpr, cmd);
+ return ret;
}
-void get_attribute_bitmap(uint64_t *atts, char *buf)
+static int com_rmatt(struct command_context *cc, struct lls_parse_result *lpr)
+{
+ const struct lls_command *cmd = SERVER_CMD_CMD_PTR(RMATT);
+ char *errctx;
+ int ret = lls(lls_check_arg_count(lpr, 1, INT_MAX, &errctx));
+
+ if (ret < 0) {
+ send_errctx(cc, errctx);
+ return ret;
+ }
+ return send_lls_callback_request(com_rmatt_callback, cmd, lpr, cc);
+}
+EXPORT_SERVER_CMD_HANDLER(rmatt);
+
+/**
+ * Return a binary representation of the given attribute value.
+ *
+ * \param atts Pointer to the attribute value.
+ * \param buf Result.
+ *
+ * This function prints a string of at most 64 characters plus the terminating
+ * \p NULL character into \a buf which must be provided by the caller and at
+ * least 65 bytes long. The "x" character is used for set attributes and "-" is
+ * used for unset attributes.
+ *
+ * In practice, not all 64 attributes are defined. In this case, the function
+ * only prints \a N + 1 characters where \a N is the greatest id of a defined
+ * attribute.
+ */
+void get_attribute_bitmap(const uint64_t *atts, char *buf)
{
int i;
const uint64_t one = 1;
buf[greatest_att_bitnum - i] = (*atts & (one << i))? 'x' : '-';
buf[i] = '\0';
}
+
/**
* Get a string containing the set attributes in text form.
*
const uint64_t one = 1;
*text = NULL;
- if (greatest_att_bitnum < 0) /* no attributes available */
+ if (greatest_att_bitnum < 0) { /* no attributes available */
+ *text = para_strdup("(no attributes available)");
return 1;
+ }
for (i = 0; i <= greatest_att_bitnum; i++) {
unsigned char bn = i;
struct osl_object obj = {.data = &bn, .size = 1};
if (!(*atts & (one << i)))
continue;
- ret = osl_get_row(attribute_table, ATTCOL_BITNUM, &obj, &row);
+ ret = osl(osl_get_row(attribute_table, ATTCOL_BITNUM, &obj, &row));
if (ret < 0)
goto err;
- ret = osl_get_object(attribute_table, row, ATTCOL_NAME, &obj);
+ ret = osl(osl_get_object(attribute_table, row, ATTCOL_NAME, &obj));
if (ret < 0)
goto err;
if (*text) {
return ret;
}
-void attribute_shutdown(enum osl_close_flags flags)
+static int att_logical_or(struct osl_row *row, void *data)
+{
+ uint64_t *att_mask = data, one = 1;
+ struct osl_object bitnum_obj;
+ int ret = osl_get_object(attribute_table, row, ATTCOL_BITNUM, &bitnum_obj);
+
+ if (ret < 0)
+ return ret;
+ *att_mask |= one << *(unsigned char *)bitnum_obj.data;
+ return 0;
+}
+
+/**
+ * Compute the attribute bit mask and check each afs info bitmap.
+ *
+ * \param aca The query field of \a aca is ignored.
+ *
+ * This iterates over all attributes in the attribute table and computes the
+ * logical or of 1 << b where b is the bit number of the attribute. The
+ * resulting bit mask is passed to aft_check_attributes() which performs the
+ * actual check.
+ *
+ * \return Standard.
+ *
+ * \sa \ref aft_check_attributes().
+ */
+int attribute_check_callback(struct afs_callback_arg *aca)
{
- osl_close_table(attribute_table, flags);
+ int ret;
+ uint64_t att_mask = 0; /* bits corresponding to a attributes */
+
+ ret = osl_rbtree_loop(attribute_table, ATTCOL_BITNUM, &att_mask,
+ att_logical_or);
+ if (ret < 0) {
+ PARA_ERROR_LOG("attribute table loop failed: %s\n",
+ para_strerror(-ret));
+ return ret;
+ }
+ return aft_check_attributes(att_mask, &aca->pbout);
+}
+
+static void attribute_close(void)
+{
+ osl_close_table(attribute_table, OSL_MARK_CLEAN);
attribute_table = NULL;
}
-int attribute_init(struct table_info *ti, const char *db)
+static int attribute_open(const char *dir)
{
int ret;
- attribute_table_desc.dir = db;
- ti->desc = &attribute_table_desc;
- ret = osl_open_table(ti->desc, &ti->table);
+ attribute_table_desc.dir = dir;
+ ret = osl(osl_open_table(&attribute_table_desc, &attribute_table));
greatest_att_bitnum = -1; /* no atts available */
if (ret >= 0) {
- attribute_table = ti->table;
find_greatest_att_bitnum();
return ret;
}
attribute_table = NULL;
- if (ret == -E_NOENT)
+ if (ret == -OSL_ERRNO_TO_PARA_ERROR(E_OSL_NOENT))
return 1;
return ret;
}
+
+static int attribute_create(const char *dir)
+{
+ attribute_table_desc.dir = dir;
+ return osl(osl_create_table(&attribute_table_desc));
+}
+
+/**
+ * Initialize the attribute table structure.
+ *
+ * \param t The table structure to initialize.
+ */
+void attribute_init(struct afs_table *t)
+{
+ t->open = attribute_open;
+ t->close = attribute_close;
+ t->create = attribute_create;
+}